I read on a forum a month or so ago that when pedaling the throttle behaves in an on/off manner (i.e., full wattage or nothing). If one is not pedaling, then the throttle behaves as expected with some degree of modulation. I was finally able to test it out this morning on my bike (BBSHD with left thumb throttle) and sure enough, I get the same result. I even tried setting PAS to zero and pushed the throttle while pedaling, but still get the same on/off behavior. Obviously I'd like to have throttle modulation while pedaling. Has anyone overcome this issue?